Oxsoralen is a topical psoralen derivative used in dermatology to treat certain skin conditions. It works by absorbing ultraviolet light and forming covalent bonds with dna which modifies the proliferation of skin cells. The activation of the compound leads to the formation of active metabolites that intercalate into dna and inhibit replication. This results in reduced abnormal cell growth and inflammatory responses in the affected tissue. The therapeutic effect is achieved by selective photosensitization that preferentially affects rapidly dividing cells. After uv exposure the drug releases reactive oxygen species that cause localized cellular damage. The medication is applied to the skin and then exposed to controlled uv-a radiation to trigger the reaction. The overall mechanism involves dna cross-linking that ultimately leads to apoptosis of targeted cells.

Oxsoralen is a prescription medication classified as a psoralen used in phototherapy for certain skin disorders. Its primary therapeutic role is to reduce excessive skin cell growth and inflammation in conditions such as psoriasis and vitiligo. The drug works by intercalating into dna and binding to ultraviolet a light to create covalent cross-links that impair dna replication. This dna damage selectively triggers apoptosis in rapidly proliferating skin cells leading to a slower turnover of epidermal tissue. Activation of Oxsoralen by uva light enhances its ability to inhibit dna synthesis without directly affecting normal cells. The resulting reduction in keratinocyte proliferation decreases scaling redness and thickness of affected skin areas. Because it requires uv a exposure it is administered under medical supervision and its effects depend on proper light dosing.

Oxsoralan may cause increased sensitivity to sunlight leading to skin reactions after exposure. Some users experience nausea or mild gastrointestinal discomfort during treatment. Headaches have been reported in a small percentage of patients. The medication can affect liver function tests requiring periodic monitoring. Visual disturbances such as blurred vision may occur temporarily. Skin redness or itching can develop at the site of application. In rare cases, low blood pressure has been observed after dosing. These effects are generally reversible once the medication is discontinued.

Oxsoralen can cause skin sensitivity to sunlight. It may lead to nausea or mild stomach discomfort. Some users experience headache or dizziness after taking the medication. Dryness or itching of the skin is a possible reaction. Increased heart rate has been reported in rare cases. Changes in taste perception are occasionally observed. Long term use may affect liver enzyme levels in certain individuals.